Gove Tower
Dept policy was that all RPT jet had to fly in controlled airspace and to towered airports. (F28s were given a dispensation) As I understand it, Gove Tower was built because 9's lacked the range to carry an alternate for DN to a suitable airport in the monsoon season.
After it was completed, sanity prevailed and a decision was taken that a tower service was not really necessary. All the controller would be doing is separating the inbound aircraft from its own planned departure and completing the requirements for a distance education post-graduate degree.
There have been a number of plans over the years to do something with the tower, including one to dismantle it and move it to Nasouri, Fiji. I suspect it still rests (rusts?) in Gove.